Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light

The rapid recombination of electron-hole pairs in BiVO(4) has limited its performance as a photocatalysis. In this paper, BiVO(4) is combined with Cu(2−x)Se semiconductor to slow down the recombination process, and thus improve its photocatalytic activity. This is enabled by careful band structure d...

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Detalles Bibliográficos
Autores principales: Liu, Zirui, Liu, Xiaoyong, Gu, Xinxin, Guo, Renqing, Zhong, Wenwu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2019
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6419854/
https://www.ncbi.nlm.nih.gov/pubmed/30874915
http://dx.doi.org/10.1186/s11671-019-2929-7
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author Liu, Zirui
Liu, Xiaoyong
Gu, Xinxin
Guo, Renqing
Zhong, Wenwu
author_facet Liu, Zirui
Liu, Xiaoyong
Gu, Xinxin
Guo, Renqing
Zhong, Wenwu
author_sort Liu, Zirui
collection PubMed
description The rapid recombination of electron-hole pairs in BiVO(4) has limited its performance as a photocatalysis. In this paper, BiVO(4) is combined with Cu(2−x)Se semiconductor to slow down the recombination process, and thus improve its photocatalytic activity. This is enabled by careful band structure design. The work function of Cu(2−x)Se is larger than that of BiVO(4). Therefore, electrons flow to Cu(2−x)Se from BiVO(4) after the composition. Accordingly, an inner field could be built, which facilitates the separation of electrons and holes. The experimental result shows that the photocatalytic efficiency of the 3 wt% Cu(2−x)Se/BiVO(4) composite is 15.8 times than that of pure BiVO(4).
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spelling pubmed-64198542019-04-05 Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light Liu, Zirui Liu, Xiaoyong Gu, Xinxin Guo, Renqing Zhong, Wenwu Nanoscale Res Lett Nano Express The rapid recombination of electron-hole pairs in BiVO(4) has limited its performance as a photocatalysis. In this paper, BiVO(4) is combined with Cu(2−x)Se semiconductor to slow down the recombination process, and thus improve its photocatalytic activity. This is enabled by careful band structure design. The work function of Cu(2−x)Se is larger than that of BiVO(4). Therefore, electrons flow to Cu(2−x)Se from BiVO(4) after the composition. Accordingly, an inner field could be built, which facilitates the separation of electrons and holes. The experimental result shows that the photocatalytic efficiency of the 3 wt% Cu(2−x)Se/BiVO(4) composite is 15.8 times than that of pure BiVO(4). Springer US 2019-03-14 /pmc/articles/PMC6419854/ /pubmed/30874915 http://dx.doi.org/10.1186/s11671-019-2929-7 Text en © The Author(s). 2019 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Liu, Zirui
Liu, Xiaoyong
Gu, Xinxin
Guo, Renqing
Zhong, Wenwu
Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title_full Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title_fullStr Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title_full_unstemmed Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title_short Cu(2−x)Se Modification onto Monoclinic BiVO(4) for Enhanced Photocatalytic Activity Under Visible Light
title_sort cu(2−x)se modification onto monoclinic bivo(4) for enhanced photocatalytic activity under visible light
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6419854/
https://www.ncbi.nlm.nih.gov/pubmed/30874915
http://dx.doi.org/10.1186/s11671-019-2929-7
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AT guxinxin cu2xsemodificationontomonoclinicbivo4forenhancedphotocatalyticactivityundervisiblelight
AT guorenqing cu2xsemodificationontomonoclinicbivo4forenhancedphotocatalyticactivityundervisiblelight
AT zhongwenwu cu2xsemodificationontomonoclinicbivo4forenhancedphotocatalyticactivityundervisiblelight

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